John c



(Nomad-5i.)

' J. C. MILLER 8v A. T. BOOTH.

LAMP BURNER.

150.595,575. Patented'nec. 14,1897.

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UNITED STATES PATENT OFFICE.

JOI-IN C. MILLER AND ALBERT T. BOOTH, OF VATERBURY, CONNECTICUT,

ASSIGNORS TO ,THE MATTHEVS & WILLARD MANUFACTURING COM- LAMP-BURNER.

SPECIFICATION forming part of Letters Patent No. 595,576, dated December 14, 1897.

Application filed February 27, 1897. Serial No. 625,416. (No model.)

.To @ZZ whom, it may concern:

Be it known that we, JOHN C. MILLER and .ALBERT 'T. BOOTH, of Waterbury, in the county of New Haven and State of Connecticut, have invented a new Improvement in Lamp-Burners; and we do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitutepart of this specication, and represent, in- Y Figure 1, a view in side elevation of one forni which a lamp-burner constructed in accordance with our invention may assume; Fig. 2, an enlarged view of the burner in vertical central section; Fig. 3, a detached view of the locking-plate and locking-wheel, the wick-adjusting spindle beingv shown-in section; Fig. 4t, a detached view of the lockingplate; Fig. 5, a corresponding View of the locking-wheel. p

Our invention relates to an improvement in lamp-burners', and while applicable for use in a great variety of situations is particularly designed to be used in bicycle-lanterns, which are constantly subjected to jars and shocks tending to displace the wick.

The object of our invention is to produce a simple, compact, and convenient burner in which the wick-adjusting spindle shall be normally locked against rotation, whereby the Wick will normally be positively held against movement in either direction.

With these ends in view our invention consists in a burner having certain details of construction and combinations of parts, as will be hereinafter described, andpointed out in the claim.

In carrying out our invention as herein shown we adapt the wick-adjusting spindle A to be longitudinally moved and provide it with a supplemental or locking wheel B, rigidly secured to it and having its periphery formed with short teeth; but any adaptation of the edge of this wheel to lock it will satisfy our invention. Normally the teeth of this wheel are interlocked with tooth-like corrugations c, formed in the wall of a circular locking-recess C, practically corresponding in diameter to the diameter of the wheel B and formed in a locking-plate C', arranged in the ,plane of the wheel and respectively provided at its upper and lower ends with holding-arms C2 and C3, entering the upper and lower members D and D' of the burnerframe for holding the plate in place. A spiral spring E, encircling the extreme inner end of the spindle A and interposed between the inner wall of the lower member D' of the frame and the outer face of the locking-wheel D, exerts a constant effort to push the spindle longitudinally outward, and hence maintain the teeth of the locking-wheel B in engagement with the-corrugations c of the locking-plate C, as seen inFig. 2. When it is desired to unlock the spindle for rotating it, it is pressed inward by means of the button A' at its outer end with sufticient force `to compress the spring E and to a suflicient extent to move the locking-wheel B entirely out of the recess C and into the position shown by broken lines in Fig. 2, after which the spindle may be freely rotated for raising and lowering the wick. For this purpose the spindle is provided in the. usual manner with two star-wheels A2 A2, which engage with the wick through vertical slots E2 E2, formed to receive them in the flattened wick-tube E', the said slots being made wide enough to permit the longitudinal movement of the spindle required for locking and unlocking it, as described.l

It will be readily understood from the foregoing description that the spindle, being normally locked against rotation, will, through its star-wheels, normally and positively hold the wick-against movement in either direction. Therefore no matter how much the `burner may be exposed to shocks and jars the IOO burners are exposed to jars and shocks-as, for instance, in railway or street carriages or cars.

XVe would have it understood that we do not liniit ourselves to the exact Construction herein shown and described,` but hold ourselves at liberty to make such changes and alterations as fairly fall within the spirit and scope of our invention.

7We are aware, however, that a lamp-burner having a longitudinally-niovable spring-aetuated spindle constructed and arranged to be locked against rotation for preventing the dropping of the wick is old and do not, therefore, elaiin that construction broadly.

Having fullydeseribed our invention, what we claim as new, and desire to secure by Letters Patent, is-

In a burner, the combination with a longitudinally-movable spindle, of one or more wheels mounted thereupon in position to engage directly with the wick for raising and lowering the saine, a relatively large supplemental or locking wheel mounted upon the spindle, a vertically-arranged locking-plate having its upper and lower ends secured to the burner and formed with a locking-recess sufficiently larger in diameter than the diameter of the looking-Wheel to adapt it to receive the said wheel the edge of which engages with the edge of the recess which is corrugated for the locking of the locking-wheel in any desired posit-ion Within the said recess, whereby the said locking -wheel and locking-plate coact to lock the spindle against rotation; and a spring for normally holding the locking-wheel in its locked position in the said recess, substantially as and for the purpose set forth.

In testimony whereof we have signed this specification in the presence of two subscribing witnesses.

JOHN C. MILLER. A. T. BOOTH.

Witnesses:

EDWARD F. COLE, CHARLES E. MCDONALD. 

